21 November – Saint Gelasius I

Modern Hagiography

Roman Martyrology

Sanctorale Catholicum

Lives of the Saints by Alban Butler.

Lives of the Saints by Sabine Baring-Gould.

Medieval Hagiography

BHL, Supplement

Liber pontificalis

Writings of Pope Gelasius

Gelasius I on Spiritual and Temporal Power, 494

Duo sunt

Decretum Gelasianum

Art & Architecture

Warburg Institute Iconographic Database

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